Identification of Disease and Efforts to Protect Native Orchid Plants Against Bacteria Infection in Liwa Botanical Garden

Abstract

Abstract Liwa Botanical Garden is located in West Lampung Regency and is one of the conservation of ornamental plants that presents the rich flora of the Bukit Barisan Selatan National Park. One of the flagship collections of this botanical garden is a natural orchid. Until now, disease infections are still a major obstacle in efforts to preserve and develop the potential of natural orchids. Based on previous research, it is known that several individual orchid collections from Liwa Botanical Garden show symptoms of bacterial infection. This pathogen will infect orchids and cause soft rot disease. This research was conducted to determine the identification of diseases and efforts to protect natural orchids against bacterial infections in the Liwa Botanical Garden through a collection of samples that showed symptoms of infection, analysis of disease symptoms, and analysis of disease resistance levels. The results showed that the response of the natural orchids of Liwa Botanical Garden to bacterial infections was to show symptoms of soft rot disease, i.e Bulbophyllum sp., Dendrobium crumenatum, Dendrobium montanum, Pholidota sp., and Vanilla sp. The type of orchid that shows the most symptoms of bacterial infection is Vanilla sp. 11 samples, and Pholidota sp. and Dendrobium crumenatum with 3 samples each. The type of orchid that shows the most symptoms is Flickingeria sp. a total of 8 samples. The natural type of the Liwa Botanical Garden which is most susceptible to bacterial infections is Pholidota sp. and Vanilla sp. with disease intensity of 10% and 7.7%. The results of this activity are expected to be basic information in efforts to protect plants against diseases to support the application of conservation of natural orchids in Liwa Botanical Garden.